将结构放入切片时出现golang错误

Question

Full code:

   package main

    import (
        "net"
    )

    var arrayOfConnections []*Connection

    type Connection struct {
        conn net.Conn
        id   int
    }

    func main() {
        serv, _ := net.Listen("tcp", ":8080")
        defer serv.Close()
        connectionHandle(serv)
    }
    func connectionHandle(serv net.Listener) {
        conn, _ := serv.Accept()
        arrayOfConnections = append(&Connection{conn, 1}, 0)
        conn.Write([]byte("one"))
        conn.Close()
    }

have an error:

first argument to append must be slice; have *Connection

error in this part of code:

arrayOfConnections = append(&Connection{conn, 1}, 0)

I'm new to Golang and it is really hard to figure out what am I doing wrong. How to rewrite the code so the new connection will be finally append to the slice? Couldn't find the answer on stackoverflow. Hope someone could help. Thank you.

Answer 1

The append should be like this

arrayOfConnections = append(arrayOfConnections, &Connection{conn, 1})

The append builtin function follows the signature

func append(s []T, vs ...T) []T

When s is the slice you want to append and vs are the elements you want to append to s, and then de function returns a new slice with all the elements appended.